libffi/testsuite/libffi.call/cls_20byte.c

   1 /* Area:        ffi_call, closure_call
   2    Purpose:     Check structure passing with different structure size.
   3                 Depending on the ABI. Check overlapping.
   4    Limitations: none.
   5    PR:          none.
   6    Originator:  <andreast@gcc.gnu.org> 20030828  */
   7
   8 /* { dg-do run } */
   9 #include "ffitest.h"
  10
  11 typedef struct cls_struct_20byte {
  12   double a;
  13   double b;
  14   int c;
  15 } cls_struct_20byte;
  16
  17 cls_struct_20byte cls_struct_20byte_fn(struct cls_struct_20byte a1,
  18                             struct cls_struct_20byte a2)
  19 {
  20   struct cls_struct_20byte result;
  21
  22   result.a = a1.a + a2.a;
  23   result.b = a1.b + a2.b;
  24   result.c = a1.c + a2.c;
  25
  26   printf("%g %g %d %g %g %d: %g %g %d\n", a1.a, a1.b, a1.c, a2.a, a2.b, a2.c,
  27          result.a, result.b, result.c);
  28   return result;
  29 }
  30
  31 static void
  32 cls_struct_20byte_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
  33                      void* userdata __UNUSED__)
  34 {
  35   struct cls_struct_20byte a1, a2;
  36
  37   a1 = *(struct cls_struct_20byte*)(args[0]);
  38   a2 = *(struct cls_struct_20byte*)(args[1]);
  39
  40   *(cls_struct_20byte*)resp = cls_struct_20byte_fn(a1, a2);
  41 }
  42
  43 int main (void)
  44 {
  45   ffi_cif cif;
  46 #ifndef USING_MMAP
  47   static ffi_closure cl;
  48 #endif
  49   ffi_closure *pcl;
  50   void* args_dbl[5];
  51   ffi_type* cls_struct_fields[4];
  52   ffi_type cls_struct_type;
  53   ffi_type* dbl_arg_types[5];
  54
  55 #ifdef USING_MMAP
  56   pcl = allocate_mmap (sizeof(ffi_closure));
  57 #else
  58   pcl = &cl;
  59 #endif
  60
  61   cls_struct_type.size = 0;
  62   cls_struct_type.alignment = 0;
  63   cls_struct_type.type = FFI_TYPE_STRUCT;
  64   cls_struct_type.elements = cls_struct_fields;
  65
  66   struct cls_struct_20byte g_dbl = { 1.0, 2.0, 3 };
  67   struct cls_struct_20byte f_dbl = { 4.0, 5.0, 7 };
  68   struct cls_struct_20byte res_dbl;
  69
  70   cls_struct_fields[0] = &ffi_type_double;
  71   cls_struct_fields[1] = &ffi_type_double;
  72   cls_struct_fields[2] = &ffi_type_sint;
  73   cls_struct_fields[3] = NULL;
  74
  75   dbl_arg_types[0] = &cls_struct_type;
  76   dbl_arg_types[1] = &cls_struct_type;
  77   dbl_arg_types[2] = NULL;
  78
  79   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type,
  80                      dbl_arg_types) == FFI_OK);
  81
  82   args_dbl[0] = &g_dbl;
  83   args_dbl[1] = &f_dbl;
  84   args_dbl[2] = NULL;
  85
  86   ffi_call(&cif, FFI_FN(cls_struct_20byte_fn), &res_dbl, args_dbl);
  87   /* { dg-output "1 2 3 4 5 7: 5 7 10" } */
  88   printf("res: %g %g %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  89   /* { dg-output "\nres: 5 7 10" } */
  90
  91   CHECK(ffi_prep_closure(pcl, &cif, cls_struct_20byte_gn, NULL) == FFI_OK);
  92
  93   res_dbl = ((cls_struct_20byte(*)(cls_struct_20byte, cls_struct_20byte))(pcl))(g_dbl, f_dbl);
  94   /* { dg-output "\n1 2 3 4 5 7: 5 7 10" } */
  95   printf("res: %g %g %d\n", res_dbl.a, res_dbl.b, res_dbl.c);
  96   /* { dg-output "\nres: 5 7 10" } */
  97
  98   exit(0);
  99 }